论文标题
振荡电势对各向异性谐振传播的淬灭效应通过磷酸静电屏障
Quenching effect of oscillating potential on anisotropic resonant transmission through a phosphorene electrostatic barrier
论文作者
论文摘要
在存在或在没有振荡电势的情况下，通过单层黑磷中的静电屏障进行谐振的隧穿传输中的各向异性。非扰动浮雕理论用于解决时间依赖性问题，并彻底讨论了所获得的结果。尽管沿锯齿形方向的屏障的共振宽度比扶手椅One的屏障宽度太薄，但无现场传播的共振光谱本质上是Lorentzian。通过应用振荡电势，在谐振能量周围产生较小的振荡，尤其是在低频范围内，均产生了较小的振荡，这两种情况都可以抑制共振的传播。沿扶手椅方向的透射光谱中注意到尖锐的不对称FANO共振，同时在较高的振荡电势的频率下，在锯齿形方向上发现了不同的线形共振。即使在角度平均值之后，沿扶手椅方向的电导也保留了可以通过实验观察到的特征性FANO特征。目前的结果表明，磷烯静电屏障可以成功用作开关设备和纳米探测器。
The anisotropy in resonant tunneling transport through an electrostatic barrier in mono layer black phosphorus either in presence or in absence of an oscillating potential is studied. Non-perturbative Floquet theory is applied to solve the time dependent problem and the results obtained are discussed thoroughly. The resonance spectra in field free transmission are Lorentzian in nature although the width of the resonance for the barrier along the zigzag direction is too thinner than that for the armchair one. Resonant transmission is suppressed for both the cases by the application of oscillating potential that produces small oscillations in the transmission around the resonant energy particularly at low frequency range. Sharp asymmetric Fano resonances are noted in the transmission spectrum along the armchair direction while a distinct line shape resonance is noted for the zigzag direction at higher frequency of the oscillating potential. Even after the angular average, the conductance along the armchair direction retains the characteristic Fano features that could be observed experimentally. The present results are supposed to suggest that the phosphorene electrostatic barrier could be used successfully as switching devices and nano detectors.
